<template>
  <!-- <div :class="[`${prefixCls}__placeholder`]" :style="getPlaceholderDomStyle" v-if="getIsShowPlaceholderDom"></div> -->
  <div :style="getWrapStyle" :class="getClass">
    <LayoutHeader v-if="getShowInsetHeaderRef" />
    <MultipleTabs v-if="getShowTabs" :key="tabStore.getLastDragEndIndex" />
  </div>
</template>
<script lang="ts" setup>
import { unref, computed, CSSProperties } from 'vue';

import LayoutHeader from './index.vue';
import MultipleTabs from '../tabs/index.vue';

import { useHeaderSetting } from '@/hooks/setting/useHeaderSetting';
import { useMenuSetting } from '@/hooks/setting/useMenuSetting';
import { useFullContent } from '@/hooks/web/useFullContent';
import { useMultipleTabSetting } from '@/hooks/setting/useMultipleTabSetting';
import { useAppInject } from '@/hooks/web/useAppInject';
import { useDesign } from '@/hooks/web/useDesign';
import { useLayoutHeight } from '../content/useContentViewHeight';
import { useMultipleTabStore } from '@/store/modules/multipleTab';

const HEADER_HEIGHT = 40;

const TABS_HEIGHT = 24;

defineOptions({ name: 'LayoutMultipleHeader' });

const { setHeaderHeight } = useLayoutHeight();
const tabStore = useMultipleTabStore();
const { prefixCls } = useDesign('layout-multiple-header');

const { getCalcContentWidth, getSplit, getShowMenu } = useMenuSetting();
const { getIsMobile } = useAppInject();
const { getFixed, getShowInsetHeaderRef, getShowFullHeaderRef, getHeaderTheme, getShowHeader } =
  useHeaderSetting();

const { getFullContent } = useFullContent();

const { getShowMultipleTab, getAutoCollapse } = useMultipleTabSetting();

const getShowTabs = computed(() => {
  return unref(getShowMultipleTab) && !unref(getFullContent);
});

const getIsShowPlaceholderDom = computed(() => {
  return unref(getFixed) || unref(getShowFullHeaderRef);
});

const getWrapStyle = computed((): CSSProperties => {
  const style: CSSProperties = {};
  if (unref(getFixed)) {
    style.width = '100%';
    // style.width = unref(getIsMobile) ? '100%' : unref(getCalcContentWidth);
  }
  if (unref(getShowFullHeaderRef)) {
    style.top = `${HEADER_HEIGHT}px`;
  }
  return style;
});

const getIsFixed = computed(() => {
  return unref(getFixed) || unref(getShowFullHeaderRef);
});

const getIsUnFold = computed(() => !unref(getShowMenu) && !unref(getShowHeader));

const getPlaceholderDomStyle = computed((): CSSProperties => {
  let height = 0;
  if (!(unref(getAutoCollapse) && unref(getIsUnFold))) {
    if (
      (unref(getShowFullHeaderRef) || !unref(getSplit)) &&
      unref(getShowHeader) &&
      !unref(getFullContent)
    ) {
      height += HEADER_HEIGHT;
    }
    if (unref(getShowMultipleTab) && !unref(getFullContent)) {
      height += TABS_HEIGHT;
    }
    setHeaderHeight(height);
  }
  return {
    height: `${height}px`,
  };
});

const getClass = computed(() => {
  return [
    prefixCls,
    `${prefixCls}--${unref(getHeaderTheme)}`,
    { [`${prefixCls}--fixed`]: unref(getIsFixed) },
  ];
});
</script>
<style lang="less" scoped>
@prefix-cls: ~'@{namespace}-layout-multiple-header';

.@{prefix-cls} {
  flex: 0 0 auto;
  transition: width 0.2s;

  &--dark {
    margin-left: -1px;
  }

  &--fixed {
    // position: fixed;
    z-index: @multiple-tab-fixed-z-index;
    top: 0;
    width: 100%;
  }

  &__placeholder {
    transition: height 0.6s ease-in-out;
  }
}
</style>
